aerated_bioreactor#

class AeratedBioreactor(ID='', ins=None, outs=(), thermo=None, **kwargs)[source]#

Same as StirredTankReactor but includes aeration. The agitator power may vary to minimize the total power requirement of both the compressor and agitator yet achieve the required oxygen transfer rate.

Examples

>>> import biosteam as bst
>>> from biorefineries.sugarcane import chemicals
>>> bst.settings.set_thermo(chemicals)
>>> feed = bst.Stream('feed',
...                   Water=1.20e+05,
...                   Glucose=2.5e+04,
...                   units='kg/hr',
...                   T=32+273.15)
>>> # Model oxygen uptake as combustion
>>> rxn = bst.Rxn('Glucose + O2 -> H2O + CO2', reactant='Glucose', X=0.5, correct_atomic_balance=True)
>>> R1 = bst.AeratedBioreactor(
...     'R1', ins=[feed, bst.Stream('air', phase='g')], outs=('vent', 'product'), tau=12, V_max=500,
...     reactions=rxn,
... )
>>> R1.simulate()
>>> R1.show()
AeratedBioreactor: R1
ins...
[0] feed
    phase: 'l', T: 305.15 K, P: 101325 Pa
    flow (kmol/hr): Water    6.66e+03
                    Glucose  139
[1] air
    phase: 'g', T: 305.15 K, P: 101325 Pa
    flow (kmol/hr): O2  1.05e+03
                    N2  3.93e+03
outs...
[0] vent
    phase: 'g', T: 305.15 K, P: 101325 Pa
    flow (kmol/hr): Water  136
                    CO2    416
                    O2     629
                    N2     3.93e+03
[1] product
    phase: 'l', T: 305.15 K, P: 101325 Pa
    flow (kmol/hr): Water    6.94e+03
                    Glucose  69.4

class GasFedBioreactor(ID='', ins=None, outs=(), thermo=None, **kwargs)[source]#

Same as StirredTankReactor but includes multiple gas feeds. The agitator power may vary to minimize the total power requirement of both the compressor and agitator yet achieve the required oxygen transfer rate.

Examples

>>> import biosteam as bst
>>> bst.settings.set_thermo(['H2', 'CO2', 'N2', 'O2', 'H2O', 'AceticAcid'])
>>> media = bst.Stream(ID='media', H2O=10000, units='kg/hr')
>>> H2 = bst.Stream(ID='H2', phase='g')
>>> fluegas = bst.Stream(ID='fluegas', phase='g')
>>> recycle = bst.Stream(ID='recycle', phase='g', N2=70, CO2=23, H2O=3, O2=4, total_flow=10, units='kg/hr')
>>> # Model acetic acid production from H2 and CO2
>>> rxn = bst.Rxn('H2 + CO2 -> AceticAcid + H2O', reactant='H2', correct_atomic_balance=True)
>>> brxn = rxn.backwards(reactant='AceticAcid')
>>> R1 = bst.GasFedBioreactor(
...     'R1', ins=[media, H2, fluegas, recycle], outs=('vent', 'product'), tau=68, V_max=500,
...     reactions=rxn, backward_reactions=brxn,
...     feed_gas_compositions={
...         1: dict(H2=100, units='kg/hr'),
...         2: dict(N2=70, CO2=25, H2O=3, O2=2, units='kg/hr'),
...     },
...     gas_substrates=('H2', 'CO2'),
...     titer={'AceticAcid': 5},
...     mixins={2: [3]}, # Recycle gets mixed with fluegas
...     optimize_power=False,
...     kW_per_m3=0.,
... )
>>> R1.simulate()
>>> R1.show()
GasFedBioreactor: R1
ins...
[0] media
    phase: 'l', T: 298.15 K, P: 101325 Pa
    flow (kmol/hr): H2O  555
[1] H2
    phase: 'g', T: 298.15 K, P: 101325 Pa
    flow (kmol/hr): H2  4.02
[2] fluegas
    phase: 'g', T: 298.15 K, P: 101325 Pa
    flow (kmol/hr): CO2  2.01
                    N2   8.83
                    O2   0.221
                    H2O  0.589
[3] recycle
    phase: 'g', T: 298.15 K, P: 101325 Pa
    flow (kmol/hr): CO2  0.0523
                    N2   0.25
                    O2   0.0125
                    H2O  0.0167
outs...
[0] vent
    phase: 'g', T: 305.15 K, P: 101325 Pa
    flow (kmol/hr): H2          0.669
                    CO2         0.387
                    N2          9.08
                    O2          0.233
                    H2O         0.478
                    AceticAcid  0.000463
[1] product
    phase: 'l', T: 305.15 K, P: 101325 Pa
    flow (kmol/hr): H2O         557
                    AceticAcid  0.836

References